Permeable sphere in magnetic field a sphere of radius r and permeability u is placed in a previously uniform magnetic field ho2. find h everywhere. 4. magnetic field from magnetized sphere consider a sphere of radius r, magnetized so that the magnetization is spherically symmetric, radially directed (i. e. m m(r)f) and is finite at the center. = (a) find the bound current densities jp (r) and k, (r). (b) if there are no free currents anywhere, find b inside the sphere. (c) find h inside the sphere. (d) find h immediately outside the surface of the sphere.